What is the purpose grants-in-aid?
To expand the federal government's role in welfare programs.
To provide federal money for programs with local control.
To increase state funding for locally controlled programs.
To provide educational assistance for individual students.

To provide federal money for programs with local control.

Explanation:

Given that "A federal grant in aid, " is a term to describe financial assistance in which the federal government generally provides finance that is based on specific standards and requirements to a program and at the same time leave the state to work separately by controlling the project until completion.

Hence, in this case, the correct answer is "To provide federal money for programs with local control.

necessary and proper clause. the congress shall have power to all laws which shall be necessary and proper for carrying into execution the foregoing powers, and all other powers vested by this constitution in the government of the united states, or in any department or officer thereof.